Open Access
ARTICLE
Interactive Trajectory Star Coordinates i-tStar and Its Extension i-tStar (3D)
1 Institute for Advanced Studies in Humanities and Social Sciences, Beihang University, Beijing, 100083, China
2Beijing Key Laboratory of Urban Spatial Information Engineering, Beijing, 100000, China
3 College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
4 School of Literature, Capital Normal University, Beijing, 100089, China
5 School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, 750021, China
* Corresponding Author: Haonan Chen. Email: